If you are actually flying from Kabul to Washington, DC or if you are just curious to know the flight time between Kabul and Washington, DC, this page will give you the information you are looking for.

Flight time from Kabul to Washington, DC is 16 hours 42 minutes

How long does it take to fly from Kabul to Washington, DC?

There are very few non-stop flights from Kabul to Washington, DC. Therefore, you'll have to take connecting flights. In such cases, flight time depend on the stopover destination specified by your airline or the one you choose while booking your ticket.